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Kapton® B Polyimide Coil

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Grade: DuPont™ Kapton® B Composition: PI Form: Coil Material: Polyimide (PI) CAS Number: 60842-76-4 Commodity: Polymers Coil Width: 610mm Color: Black
Kapton® B is DuPont's opaque black polyimide film — the grade of choice wherever the outstanding electrical, thermal, and mechanical properties of Kapton® polyimide must be combined with inherent optical opacity. The carbon-black pigmentation that gives Kapton® B its distinctive black appearance simultaneously blocks visible and near-infrared light transmission, absorbs stray radiation, and reduces surface reflectivity, without any degradation of the film's dielectric strength, cryogenic-to-high-heat thermal stability, or mechanical toughness. Kapton® B is used across photodetection shielding, optical sensor packaging, EMI absorption layers, radiation shielding films, and any application where a black, thermally stable, electrically insulating polyimide film is required.
Starting at $401.00 each
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Material Properties

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Fair
Alcohols Poor
Alkalis Poor
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Halogens Fair
Ketones Good
Mechanical Properties
Element Value
Coefficient of friction 0.42
Hardness - Rockwell E52-99
Elongation at break( % ) Aug-70
Tensile modulus( GPa ) 2.0 – 3.0
Izod impact strength( J m⁻¹ ) 80
Tensile strength( MPa ) 70-150
Electrical Properties
Element Value
Dielectric constant @1MHz 3.4
Dissipation factor @ 1kHz 0.0018
Dielectric strength( kV mm⁻¹ ) 154 – 303
Surface resistivity( Ohm/sq ) 10¹⁶
Volume resistivity( Ohmcm ) 10¹⁸
Physical Properties
Element Value
Flammability V0
Radiation resistance Good
Refractive index 1.66
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 53
Water absorption - over 24 hours( % ) 0.2-2.9
Density( gcm⁻³ ) 1.42
Thermal Properties
Element Value
Heat-deflection temperature - 1.8MPa( C ) 360
Lower working temperature( C ) -270
Upper working temperature( C ) 250-320
Specific heat( J K⁻¹ kg⁻¹ ) 1090
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.1-0.35@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 30-60
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Available Configurations

Properties common to all products in this list

Grade: DuPont™ Kapton® B Composition: PI Form: Coil Material: Polyimide (PI) CAS Number: 60842-76-4 Commodity: Polymers Coil Width: 610mm Color: Black

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Tolerances

Coil
Thickness ±20%